1620 HST

[ETD66SS]

So I mowed 2 acres of lawn with the parking brake partially applied, heated up the oil, and now the HST unit is leaking pretty bad.

I got the HST unit out, but did not see an obvious bad seal/leak.

I guess I just rebuild the pump with a seal kit?

How hard are these to do? I see there are no rebuilt units available, only new units for $6600. That's an absurd price IMO...

Index of /~dev/WhiteDwarf/Projects/1620/HST

 

[ETD66SS]

Ok, I did the repair myself.

Unfortunately I did not have my camera with me when I first pulled apart the HST unit. But it looked like a factory defect on the gasket between the HST pump housing and the port plate. The gasket was askew & torn, then the housing was bolted down. I could see the gasket was like that from the factory due to the "stain line" from it on the aluminum housing, it was not a recent event. I overhauled the HST unit completely, and reassembeled the tractor. Runs fine, no leaks. We'll see what happens when I give it a hard days work.

Here are the disassembly/assembly pictures I took of the job.

Index of /~dev/WhiteDwarf/Projects/1620/HST/Disassembly

Index of /~dev/WhiteDwarf/Projects/1620/HST/Assembly

 

[ETD66SS]

I guess I'm just talking to myself here, glad I didn't actually need any help from anyone here :laughing: